EP 1911057 B1 20090527 - ELECTRICAL SWITCHGEAR
Title (en)
ELECTRICAL SWITCHGEAR
Title (de)
ELEKTRISCHE SCHALTANLAGE
Title (fr)
MECANISME DE COMMUTATION ELECTRIQUE
Publication
Application
Priority
- EP 2006064445 W 20060720
- EP 05107046 A 20050729
- EP 06792529 A 20060720
Abstract (en)
[origin: EP1748455A1] Electrical switchgear, e.g. a circuit breaker, must in general provide good dielectric strength in open position in order to avoid discharge. To improve the dielectric strength capacitors are often arranged in parallel between the contacts of the switchgear. For very high voltage applications, e.g. >500kV, two circuit breaker are connected in series for switching such high voltages, i.e. the total voltage to be switched needs to be shared equally by the two switches. Because of the required capacitance the capacitor and hence also the switchgear is big, especially of great diameter, and costly. According to the present invention shields 10, 11 are arranged in order to form additional capacitors C 1 ", C 1 ''' and C 2 between the shields 10, 11 and between a connecting means 4, connecting the two switches 2, 3, and the enclosure 5. The resulting switchgear 1 has increased dielectric strength and the total voltage is essentially equally shared by the two switches 2, 3 in series.
IPC 8 full level
H01H 33/14 (2006.01); H01H 33/16 (2006.01)
CPC (source: EP KR US)
H01H 33/14 (2013.01 - EP KR US); H01H 33/16 (2013.01 - EP KR US); H01H 73/02 (2013.01 - KR); H01H 2033/146 (2013.01 - EP KR US); H01H 2033/66284 (2013.01 - EP KR US); H01H 2033/66292 (2013.01 - EP KR US)
Designated contracting state (EPC)
CH DE FR IT LI SE
DOCDB simple family (publication)
EP 1748455 A1 20070131; CN 100576401 C 20091230; CN 101053051 A 20071010; DE 602006007009 D1 20090709; EP 1911057 A1 20080416; EP 1911057 B1 20090527; JP 2009503775 A 20090129; JP 4864084 B2 20120125; KR 100833693 B1 20080529; KR 20070088552 A 20070829; US 2008093344 A1 20080424; US 7589295 B2 20090915; WO 2007014865 A1 20070208
DOCDB simple family (application)
EP 05107046 A 20050729; CN 200680001080 A 20060720; DE 602006007009 T 20060720; EP 06792529 A 20060720; EP 2006064445 W 20060720; JP 2008523327 A 20060720; KR 20077007334 A 20070330; US 66587306 A 20060720